All Kerlink WIRNET stations running fw 2.x are likely to have a rather old dropbear:
The following CVEs are in affect on Dropbear SSH:
CVE-2016-7406 Critical
CVE-2016-7407 Critical
CVE-2016-7408 Critical
CVE-2016-7409 Critical
CVE-2012-0920 High
CVE-2013-4421 Medium
CVE-2013-4434 Medium
CVE-2008-5161 Low
==> use API to find all Kerlinks and scan ...
Add:
Newest FW 3.6 still ships with dropbear 2016.63 !!!!